[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH 1/9] x86: adjust cr3_pcid() return type

There's no need for it to be 64 bits wide - only the low twelve bits
of CR3 hold the PCID.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/flushtlb.c
+++ b/xen/arch/x86/flushtlb.c
@@ -103,7 +103,8 @@ static void do_tlb_flush(void)
 void switch_cr3_cr4(unsigned long cr3, unsigned long cr4)
-    unsigned long flags, old_cr4, old_pcid;
+    unsigned long flags, old_cr4;
+    unsigned int old_pcid;
     u32 t;
     /* This non-reentrant function is sometimes called in interrupt context. */
--- a/xen/include/asm-x86/processor.h
+++ b/xen/include/asm-x86/processor.h
@@ -287,7 +287,7 @@ static inline unsigned long cr3_pa(unsig
     return cr3 & X86_CR3_ADDR_MASK;
-static inline unsigned long cr3_pcid(unsigned long cr3)
+static inline unsigned int cr3_pcid(unsigned long cr3)
     return cr3 & X86_CR3_PCID_MASK;

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.